dashArray property

List<double>? dashArray

Apply dash pattern for the arc.

A sequence of dash and gap will be rendered based on the values in this list. Once all values of the list is rendered, it will be repeated again till the end of the arc.

 late List<Model> _arcs;
 late MapZoomPanBehavior _zoomPanBehavior;
 late MapShapeSource _mapSource;

 @override
 void initState() {
   _zoomPanBehavior = MapZoomPanBehavior(
     focalLatLng: MapLatLng(40.7128, -95.3698),
     zoomLevel: 3,
   );

  _mapSource = MapShapeSource.asset(
     "assets/world_map.json",
     shapeDataField: "continent",
   );

  _arcs = <Model>[
     Model(MapLatLng(40.7128, -74.0060), MapLatLng(44.9778, -93.2650)),
     Model(MapLatLng(40.7128, -74.0060), MapLatLng(33.4484, -112.0740)),
     Model(MapLatLng(40.7128, -74.0060), MapLatLng(29.7604, -95.3698)),
     Model(MapLatLng(40.7128, -74.0060), MapLatLng(39.7392, -104.9903)),
   ];
 super.initState();
 }

 @override
 Widget build(BuildContext context) {
   return Scaffold(
     body: SfMaps(
       layers: [
         MapShapeLayer(
           source: _mapSource,
           zoomPanBehavior: _zoomPanBehavior,
           sublayers: [
             MapArcLayer(
               arcs: List<MapArc>.generate(
                 _arcs.length,
                 (int index) {
                   return MapArc(
                     from: _arcs[index].from,
                     to: _arcs[index].to,
                     dashArray: [8, 3, 4, 3],
                   );
                 },
               ).toSet(),
             ),
           ],
         ),
       ],
     ),
   );
 }

class Model {
  Model(this.from, this.to);

  MapLatLng from;
  MapLatLng to;
}

See also:

• The MapArcLayer.dashArray, to apply same dash pattern for all arcs.

Implementation

final List<double>? dashArray;